The Union Bond Store is a heritage-listed former warehouse, bond store and Westpac bank branch and museum located at 47 George Street in the inner city Sydney suburb of The Rocks in the City of Sydney local government area of New South Wales, Australia. It was designed by John Bibb and built from 1841 to 1842. It is also known as Union Bond Store (former) and Westpac Bank. The property is owned by Property NSW, an agency of the Government of New South Wales. It was added to the New South Wales State Heritage Register on 10 May 2002.